Which integrations does Merge support through the unified API?

Merge supports over 150+ integrations across HRIS (BambooHR, Workday), ATS (Lever, Greenhouse), CRM (Salesforce, HubSpot), and Ticketing (Zendesk, Jira). Your agent can access all of them using the same standardized tools once the accounts are linked in Merge.

How do I target a specific customer's data through the agent?

Each request requires a `MERGE_ACCOUNT_TOKEN` which uniquely identifies a linked account (e.g., a specific customer's integration). By providing this token along with your API key, your agent can retrieve data exclusively from that customer's connected platform.

Can my agent list candidates from my ATS and support tickets from Zendesk at the same time?

Yes. Since Merge unifies multiple categories, your agent can use the `list_candidates` and `list_tickets` tools in the same conversation to bridge data from different functional areas of your business instantly.

Merge (Unified Integration API) MCP Server for LangChain 8 tools — connect in under 2 minutes

Name: Merge (Unified Integration API)
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 8 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect Merge (Unified Integration API) through the Vinkius and LangChain agents can call every tool natively — combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token — get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "merge-unified-integration-api": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using Merge (Unified Integration API), show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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About Merge (Unified Integration API) MCP Server

Connect your Merge.dev account to any AI agent and take full control of your unified B2B integrations across HRIS, ATS, CRM, and Ticketing through natural conversation.

LangChain's ecosystem of 500+ components combines seamlessly with Merge (Unified Integration API) through native MCP adapters. Connect 8 tools via the Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures — with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

What you can do

HRIS Orchestration — List all active employees and organizational companies from your connected HRIS (e.g., BambooHR, Workday, HiBob) directly from your agent
ATS Talent Pipeline — Retrieve recruited candidates and tracked job applications from your ATS integration (e.g., Greenhouse, Lever, Ashby) to monitor hiring workflows
CRM Contact Management — Access external sales contacts and customer accounts from your CRM (e.g., Salesforce, HubSpot, Pipedrive) to manage your business directory securely
Ticketing & Support — List inbound and outbound support tickets from your issue-tracking boards (e.g., Zendesk, Jira, Front) to stay updated on customer issues
Unified Data Access — Retrieve standardized data structures across hundreds of different integrations using a single set of API tools natively handled by Merge
Integration Audit — Inspect linked account details and meta-configurations to understand the current state and boundaries of your connected workspace securely

The Merge (Unified Integration API) MCP Server exposes 8 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Merge (Unified Integration API) to LangChain via MCP

Follow these steps to integrate the Merge (Unified Integration API) MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 8 tools from Merge (Unified Integration API) via MCP

Why Use LangChain with the Merge (Unified Integration API) MCP Server

LangChain provides unique advantages when paired with Merge (Unified Integration API) through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents — combine Merge (Unified Integration API) MCP tools with 500+ LangChain components

Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

Memory and conversation persistence let agents maintain context across Merge (Unified Integration API) queries for multi-turn workflows

Merge (Unified Integration API) + LangChain Use Cases

Practical scenarios where LangChain combined with the Merge (Unified Integration API) MCP Server delivers measurable value.

RAG with live data: combine Merge (Unified Integration API) tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Merge (Unified Integration API), synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Merge (Unified Integration API) tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Merge (Unified Integration API) tool call, measure latency, and optimize your agent's performance

Merge (Unified Integration API) MCP Tools for LangChain (8)

These 8 tools become available when you connect Merge (Unified Integration API) to LangChain via MCP:

get_account_details

dev. Retrieve linked Account Details exposing integration boundaries

list_accounts

List customer accounts parsed from the CRM integration

list_applications

List job applications inside the ATS integration

list_candidates

List recruited candidates across the ATS integration

list_companies

List companies mapped inside the HRIS integration

list_contacts

List external contacts mapped in the CRM integration

list_employees

Be aware the list might be paginated or heavy. List employees from the linked HRIS integration

list_tickets

List inbound/outbound support tickets inside the Ticketing integration

Example Prompts for Merge (Unified Integration API) in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Merge (Unified Integration API) immediately.

"List all active employees from our linked HRIS"

"Show me the last 5 candidates in our ATS talent pipeline"

"List all open support tickets in our ticketing integration"

Troubleshooting Merge (Unified Integration API) MCP Server with LangChain

Common issues when connecting Merge (Unified Integration API) to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Merge (Unified Integration API) + LangChain FAQ

Common questions about integrating Merge (Unified Integration API) MCP Server with LangChain.

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.